drm: unbreak VA_DRM_IsRenderNodeFd on FreeBSD, v2

[jbeich]

Closes #292. I've added version check.

--- before
+++ after
@@ -1,24 +1,26 @@
 $ mpv --no-config --msg-level=vd=v --hwdec=vaapi --gpu-context=drm /path/to/foo.mkv
  (+) Video --vid=1 (*) (h264 1920x1080 23.976fps)
  (+) Audio --aid=1 --alang=jpn (*) (aac 2ch 48000Hz)
  (+) Subs  --sid=1 --slang=eng (*) 'English subs' (ass)
 [vd] Container reported FPS: 23.976024
 [vd] Codec list:
 [vd]     h264 - H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
 [vd]     h264_v4l2m2m (h264) - V4L2 mem2mem H.264 decoder wrapper
 [vd] Opening decoder h264
 [vd] Looking at hwdec h264-vaapi...
-[vd] Could not create device.
-[vd] No hardware decoding available for this codec.
-[vd] Using software decoding.
-[vd] Detected 8 logical cores.
-[vd] Requesting 9 threads for decoding.
+[vd] Trying hardware decoding via h264-vaapi.
+[vd] Pixel formats supported by decoder: vaapi_vld yuv420p
+[vd] Codec profile: High (0x64)
+[vd] Requesting pixfmt 'vaapi_vld' from decoder.
 [vd] Selected codec: h264 (H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10)
-[vd] Using software decoding.
-[vd] Decoder format: 1920x1080 yuv420p auto/auto/auto/auto/auto CL=mpeg2/4/h264
+[vd] Pixel formats supported by decoder: vaapi_vld yuv420p
+[vd] Codec profile: High (0x64)
+[vd] Requesting pixfmt 'vaapi_vld' from decoder.
+Using hardware decoding (vaapi).
+[vd] Decoder format: 1920x1080 vaapi[nv12] auto/auto/auto/auto/auto CL=mpeg2/4/h264
 [vd] Using container aspect ratio.
 AO: [oss] 48000Hz stereo 2ch s32
-VO: [gpu] 1920x1080 yuv420p
+VO: [gpu] 1920x1080 vaapi[nv12]
 AV: 00:00:00 / 00:23:52 (0%) A-V: -0.000
 
 Exiting... (Quit)

[dvrogozh]

This function call ultimately results into strdup. Hm, don't we have a memory leak here? /and had it before since v1 of this function used strdup as well/

https://github.com/freedesktop/mesa-drm/blob/10dd3eb6d5ab6c1867e1ca9dd67756c152e6269e/xf86drm.c#L2792
https://github.com/freedesktop/mesa-drm/blob/10dd3eb6d5ab6c1867e1ca9dd67756c152e6269e/xf86drm.c#L4295

[dvrogozh]

@jbeich : ping

[evelikov]

Fwiw I've removed the function all together, in favour of drmGetNodeTypeFromFd() with #614

[dvrogozh]

This part was reworked with recently merged #614. Please, take a look and reopen/submit new PR if needed.